A note on the Petzold reading for the first meeting: you are not expected to be able to follow all the details of Petzold’s little program for converting strings of ASCII characters to uppercase. However, as a sneak preview of where we’re headed, I’ve added some notes on the program to this site, including some more detailed explanation of the program, plus several translations into R. In a few weeks, you’ll be able to make sense of the R versions (if not the Intel 8080 assembly language—though that’s not so bad either). This is all strictly optional.